rotation metrics by an angle theta

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Tomer Segev 2024-1-5

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https://ww2.mathworks.cn/matlabcentral/answers/2066801-rotation-metrics-by-an-angle-theta

评论： Dyuman Joshi 2024-1-7

Hey all ,

I am calculating elemnts of matrix whos size are (X,Y) and after i calculate the elemnets, i want to rotate the matrix by an angle of theta.

For example:

x=linspace(-x1,x1,n);
Unrecognized function or variable 'x1'.
y=linspace(-x1,x1,n);
for i=1:length(x)
    for j=1:length(y)
        H=some_matrix_that_i_create;
        E(x,y,:)=eig(H);
    end
end

So my quesion is how can I rotate the matrix E(:,:,n)? Is there anyway to rotate the whole E?

Thanks a lot in advance!

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Tomer Segev 2024-1-7

I uploaded an two files that looks the same, except the fact that they are rotated pi/4 with respect to one another. What I want to do is to rotate the matrix that presents their data so that they will be the same again (and not rotated with pi/4)

Dyuman Joshi 2024-1-7

These seem like streamline plots. Note that rotating matrices is not equal to rotating plots.

Nor do they seem to be rotated w.r.t. each other at pi/4. The center portion/blobs of the plots might seem so, but the rest of the plots do not follow the mentioned rotation.

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